diff options
Diffstat (limited to 'arch/x86/kernel/acpi/boot.c')
-rw-r--r-- | arch/x86/kernel/acpi/boot.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index d37593c2f438..7678f10c4568 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c | |||
@@ -973,6 +973,29 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) | |||
973 | nr_ioapics++; | 973 | nr_ioapics++; |
974 | } | 974 | } |
975 | 975 | ||
976 | int __init acpi_probe_gsi(void) | ||
977 | { | ||
978 | int idx; | ||
979 | int gsi; | ||
980 | int max_gsi = 0; | ||
981 | |||
982 | if (acpi_disabled) | ||
983 | return 0; | ||
984 | |||
985 | if (!acpi_ioapic) | ||
986 | return 0; | ||
987 | |||
988 | max_gsi = 0; | ||
989 | for (idx = 0; idx < nr_ioapics; idx++) { | ||
990 | gsi = mp_ioapic_routing[idx].gsi_end; | ||
991 | |||
992 | if (gsi > max_gsi) | ||
993 | max_gsi = gsi; | ||
994 | } | ||
995 | |||
996 | return max_gsi + 1; | ||
997 | } | ||
998 | |||
976 | static void assign_to_mp_irq(struct mp_config_intsrc *m, | 999 | static void assign_to_mp_irq(struct mp_config_intsrc *m, |
977 | struct mp_config_intsrc *mp_irq) | 1000 | struct mp_config_intsrc *mp_irq) |
978 | { | 1001 | { |